Split specs according to db version #17

Job	Run time
RSpec PostgreSQL 17, Ruby 3.1, Rails 6_1	2m 7s
RSpec PostgreSQL 17, Ruby 3.1, Rails 7_0	2m 14s
RSpec PostgreSQL 17, Ruby 3.1, Rails 7_1	2m 5s
RSpec PostgreSQL 17, Ruby 3.1, Rails 7_2	2m 3s
RSpec PostgreSQL 17, Ruby 3.2, Rails 6_1	2m 14s
RSpec PostgreSQL 17, Ruby 3.2, Rails 7_0	2m 12s
RSpec PostgreSQL 17, Ruby 3.2, Rails 7_1	2m 8s
RSpec PostgreSQL 17, Ruby 3.2, Rails 7_2	2m 3s
RSpec PostgreSQL 17, Ruby 3.3, Rails 6_1	2m 10s
RSpec PostgreSQL 17, Ruby 3.3, Rails 7_0	2m 14s
RSpec PostgreSQL 17, Ruby 3.3, Rails 7_1	2m 9s
RSpec PostgreSQL 17, Ruby 3.3, Rails 7_2	2m 4s
RSpec PostgreSQL 17, Ruby jruby, Rails 6_1	2m 33s
RSpec PostgreSQL 17, Ruby jruby, Rails 7_0	2m 26s
	30m 42s

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